Nut-lock.



PATENI'ED APR. 30, 1907.

M. ROSENKRANZ.

` NUT LOCK. Y

APPLIoATIoN FILED JAN. so, 1907 UNITED STATES .PATENT OlFlFllCENUT-LOCK- Speeicaton of Letters Patent.

Patenten Apri: 30, 1907.

Application tiled January 30. 1907. Serial No. 354,922.

Be it known that l, Marinas RosnNIiirANz, a citizen of the UnitedStates, residing at Pueblo, in the county of Pueblo and State ofColorado, have invented certain new and useful Improvements inNutJQOcks, of which the following` is a specification.

This invention relates to nut locks, and while capable of generalapplication is particularly designed for railway work, engines andmachinery.

It is an important object of the invention to enable the repeated use ofthe device without damage to the bolt, the nutI` or any portion of thelock.

A further object of the invention is to embody the same as a completedevice which is independent of the bolt and therefore appli cable to anyordinary bolt.

With these and other objects in view, the present invention consists inthe conibination and arrangement of parts as will be hereinafterdescribed, shown in the accompanying drawings and particularly pointedout in the appended claims, it being understood that changes in theform, proportion, size and minor details may be made, within the scopeof the claims, without departing 'from the spirit or sacrificing any ofthe advantages of the invention.

y l n the drawing,*l1`igure 1 is an elevation of a portion of a railwaytrack having the nut lock of the present invention applied thereto. Fig,2 is a sectional view taken transversely through Fig. 1. Fig. 3 is adetail perspective view of the nut of the present invention. Fig. 4 is adetail perspective view of the locking washer.

Like characters of reference designate corresponding parts in each ot'the figures of the drawing.

The device' of the present invention includes a nut l and a lockingwasher 2. The nut has a threaded bore, as usual, and in addition i'sprovided at its inner end with a circular head or flange 3 pierced by aperforation 4, and having an edge notch 5 in a line with the opening'and constituting a pointer or index to indicate the position of theopening. lf desired, more than one openingI may be provided, forinstance, one for each face of the nut.

The locking washer 2 is preferably circular or of disk form havingsubstantially the same diameter as that of the head or flange of thenut. 'lhe boro of the washer is smooth and slightly greater in diameter'than that of the nut. From the bach of the washer there projects a boss6 which non-circular on its exterior, preferably rectangular' in crosssection, and concentric with respect to the bore of the washer. Thatportion of the washer which projects beyond the boss constitutes anannular flange which pierced by an annular series of perforations 7,with which the perforation 4 of the nut is designed to successivelyregister. '.l`he peripheral edge of the washer' is provided with aseries of notches 8, one for each perforation 7 so as to indiez'tte theposition thereof..

One appliuation of the present invention has been shown in li'ie's. landv i2, wherein El indicates an ordinary track rail, 'l0 and l l theusual Vfish plates, and' l2 a bolt piercing the web of the rail and thefish platefft. These parts are of the common or ordinary form. exceptthat the 'fish plate ll,whiz h is remote 'from the lead of tite holt, isprovided with a non-circular opening 13 larger than the diameter of thebolt and of a size and shape to receive the boss 6 of the lockingwasher, thereby to prevent rotation of the washer. The nut is screwedupon the bolt until it is tight against the washer 'with the notch orindex 5 registering with one of the notches or indexes of the washer,.in which position the perforation 4 of the nu t alined withone of theperforations of the washer. r locking pin or key Vlil is then driventhrough the alined openings, whereby the nut and washer are interlockedagainst .independent rotation and, as the locking washer ris heldagainst rotation by reason of its non-circular boss li tting in thenon-circular opening in the adjacent Yfish plate, the nut is effec/ually locked in a very simple and convenient manner. The importance ofthe edge notches or indexes on the peripheries of the nut and the'nislier 'will now be al'iparent, vfor the reason that the perforationsof the washer are covered and. concealed by the nut, and therefore itwould be practically impossible to determine when the perforation of thenut is in alinement with a perforation of the washer'. flic/never it isdesired to i'einove the nut, the l cking pin is withdrawn, whereupon thenut can be unscrewed. and the washer removed if desired. lt will now beunderstood that neither' the bolt, the nu t nor the washer' is in anywise damaged by the removal of the nut,

TOO

and, therefore, the device may be repeatedly used.

A very important feature of the invention is that the device is Completein itself and may be put upon the market in standard sizes independentof the bolts, whereby the deviee is applicable to bolts noT in use anddoes not require any speeially prepared bolts nor any change oraddition` to bolts now in use.

Wh at is olaiined is 1. A nut lock comprising a VWasher having a smoothbore and provided With a redueed boss Whioh is non-oiroular on itsexterior and eoneentrie Wit-h the bore, the VWasher being substantiallyoiroular in shape and provided With an annular series of perforations,there being edge notohes in the periphery of the Washer in alinementWith the respeotive perforations, and a nut provided at one end with asubstantially oireular flange pierced by a perforation adapted tosuoeessively register With the perforations of the 'Washer and providedWith an edge notoh indioating the position of the perforations.

2. A nut look comprising a Washer having a smooth bore and anon-oireular boss upon one side of the Washer and an opening in theother side of the Washer, and a nut provided with a perforation arrangedto register With the opening of the Washer, the peripheral edge of theWasher having an index indicating the position of the opening, and theperiphery of the nut having an index indieating the position of theopening in the nut and arranged for registration With the index of theWasher.

3. The combination of a bolt and a inember pierced thereby, said memberhaving a non-circular opening through Which the bolt proj eots, a Washerhaving a smooth bore and a non-eireular boss upon its rear side iittingthe non-circular opening and thereby held against rotation, a nut uponthe bolt, the Washer and nut having registered openings, and providedwith notehes in their peripheries indicating their respeotive openings,and a loeking key fitting in the registered openings.

4. A nut look comprising a substantially eireularwasher having a smoothbore and a non-oiroular boss upon one side thereof and concentric Withthe bore, the other side of the Washer being provided Wi th an annularseries of openings, the periphery of the Washer having an annular seriesof indexes indieating the positions of the respeotive openings, and nuthaving a perforation for successive registration With the openings ofthe 'Washer and also provided 'With an index indicating the position ofthe opening and arranged for sueoessive registration With the indexes ofthe Washer to indieate When the opening of the nut is alined with anopening of the Washer.

ln testimony whereof I affix my signature, in presenee of two Witnesses.

MATHIAS ROSENKRANZ.

Witnesses G. F. WAGNER, N rxoLAUs GALLroN.

